of  Animals  and  Vegetables.  35 
creafed  to  a confiderable  degree;  while  the  other  ear 
continued  in  its  ufual  cold,  and  alfo  began  to  thicken. 
The  day  following  the  frozen  ear  was  ftill  warm ; and 
two  days  after  it  ftill  retained  its  heat  and  thicknefs, 
which  continued  for  many  days  after. 
About  a week  after  this,  the  mixture  being  the  fame  as 
the  former,  I introduced  both  ears  of  the  fame  rabbit 
through  the  hole,  and  froze  them  both : the  found  one, 
however,  froze  firft,  probably  from  its  being  confidera- 
bly  colder  at  the  beginning.  When  withdrawn,  they 
foon  thawed,  and  foon  both  became  warm,  and  the  f re  ill 
ear  thickened  as  the  other  had  done  before. 
Feb.  23,  1777,  I repeated  thefe  experiments.  I froze 
the  ear  of  a white  rabbit  till  it  became  as  hard  as  a board. 
It  was  longer  in  thawing  than  in  the  former  experiment, 
and  much  longer  before  it  became  warm ; however,  in 
about  two  hours  it  became  a little  warm,  and  the  day 
following  it  was  very  wa m and  thickened. 
In  the  fpring  1 77  0, 1 obferved  that  the  cocks  I had  in 
the  country  had  their  combs  fmooth  with  an  even  edge, 
and  not  fo  broad  as  formerly,  appearing  as  if  near  one 
half  of  them  had  been  cut  off.  Having  inquired  into  the 
caufe  of  this,  my  fervant  told  me,  that  it  had  been  com- 
mon in  that  winter  during  the  hard  froft.  He  obferved, 
that  they  had  become  in  part  dead,  and  at  laft  dropped  off : 
F 2 alfo, 
